Python: List Comprehension: List Filter

Write a function that takes a list lst and a function handler fun and returns another list containing only the elements of lst that satisfy the condition given by fun. The function fun takes one argument and returns a boolean (True or False).

list_filter([1,2,3,4,5,6,7], lambda x: x%2 == 0) -> [2,4,6]
list_filter([1,2,3,4,5,6,7], lambda x: x/2 > 2) -> [6,7]